TY - JOUR T1 - Preliminary Note on the Nephridia of Perichaeta JF - Proceedings of the Royal Society of London (1854-1905) VL - 43 SP - 309 EP - 310 PY - 1887/01/01/ UR - http://dx.doi.org/10.1098/rspl.1887.0137 M3 - doi:10.1098/rspl.1887.0137 AU - Beddard, F. ER -